English verb conjugation MUST OBSCURE

Regular verb: obscure - obscured - obscured

Affirmation

Simple form

I must obscure
you must obscure
he must obscure
we must obscure
you must obscure
they must obscure

V-ing form

I must be obscuring
you must be obscuring
he must be obscuring
we must be obscuring
you must be obscuring
they must be obscuring

Perfect

I must have obscured
you must have obscured
he must have obscured
we must have obscured
you must have obscured
they must have obscured

V-ing perfect

I must have been obscuring
you must have been obscuring
he must have been obscuring
we must have been obscuring
you must have been obscuring
they must have been obscuring

Negation

Simple form

I mustn't obscure
you mustn't obscure
he mustn't obscure
we mustn't obscure
you mustn't obscure
they mustn't obscure

V-ing form

I mustn't be obscuring
you mustn't be obscuring
he mustn't be obscuring
we mustn't be obscuring
you mustn't be obscuring
they mustn't be obscuring

Perfect

I mustn't have obscured
you mustn't have obscured
he mustn't have obscured
we mustn't have obscured
you mustn't have obscured
they mustn't have obscured

V-ing perfect

I mustn't have been obscuring
you mustn't have been obscuring
he mustn't have been obscuring
we mustn't have been obscuring
you mustn't have been obscuring
they mustn't have been obscuring

Interrogative form

Simple form

must I obscure?
must you obscure?
must he obscure?
must we obscure?
must you obscure?
must they obscure?

V-ing form

must I be obscuring?
must you be obscuring?
must he be obscuring?
must we be obscuring?
must you be obscuring?
must they be obscuring?

Perfect

must I have obscured?
must you have obscured?
must he have obscured?
must we have obscured?
must you have obscured?
must they have obscured?

V-ing perfect

must I have been obscuring?
must you have been obscuring?
must he have been obscuring?
must we have been obscuring?
must you have been obscuring?
must they have been obscuring?

Interro-negative form

Simple form

mustn't I obscure?
mustn't you obscure?
mustn't he obscure?
mustn't we obscure?
mustn't you obscure?
mustn't they obscure?

V-ing form

mustn't I be obscuring?
mustn't you be obscuring?
mustn't he be obscuring?
mustn't we be obscuring?
mustn't you be obscuring?
mustn't they be obscuring?

Perfect

mustn't I have obscured?
mustn't you have obscured?
mustn't he have obscured?
mustn't we have obscured?
mustn't you have obscured?
mustn't they have obscured?

V-ing perfect

mustn't I have been obscuring?
mustn't you have been obscuring?
mustn't he have been obscuring?
mustn't we have been obscuring?
mustn't you have been obscuring?
mustn't they have been obscuring?

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